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Finding the Fourth Proportional to 86,557.80, 129,836.70 and 27,411.60

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Solution

The fourth proportional to 86,557.80, 129,836.70 and 27,411.60 is: 41,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,557.80 : 129,836.70 = 27,411.60 : x
  2. Step 2: Convert to fraction form
    86,557.80/129,836.70 = 27,411.60/x
  3. Step 3: Cross multiply
    86,557.80x = 129,836.70 × 27,411.60
  4. Step 4: Simplify right side
    86,557.80x = 3,559,031,685.72
  5. Step 5: Solve for x
    x = 3,559,031,685.72/86,557.80
  6. Step 6: Final answer
    x = 41,117.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.